cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

via-pmu-event.c (2121B)

      1/*
      2 * via-pmu event device for reporting some events that come through the PMU
      3 *
      4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
      5 *
      6 * This program is free software; you can redistribute it and/or modify
      7 * it under the terms of the GNU General Public License as published by
      8 * the Free Software Foundation; either version 2 of the License, or
      9 * (at your option) any later version.
     10 *
     11 * This program is distributed in the hope that it will be useful, but
     12 * WITHOUT ANY WARRANTY; without even the implied warranty of
     13 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
     14 * NON INFRINGEMENT.  See the GNU General Public License for more
     15 * details.
     16 *
     17 * You should have received a copy of the GNU General Public License
     18 * along with this program; if not, write to the Free Software
     19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
     20 *
     21 */
     22
     23#include <linux/input.h>
     24#include <linux/adb.h>
     25#include <linux/pmu.h>
     26#include "via-pmu-event.h"
     27
     28static struct input_dev *pmu_input_dev;
     29
     30static int __init via_pmu_event_init(void)
     31{
     32	int err;
     33
     34	/* do other models report button/lid status? */
     35	if (pmu_get_model() != PMU_KEYLARGO_BASED)
     36		return -ENODEV;
     37
     38	pmu_input_dev = input_allocate_device();
     39	if (!pmu_input_dev)
     40		return -ENOMEM;
     41
     42	pmu_input_dev->name = "PMU";
     43	pmu_input_dev->id.bustype = BUS_HOST;
     44	pmu_input_dev->id.vendor = 0x0001;
     45	pmu_input_dev->id.product = 0x0001;
     46	pmu_input_dev->id.version = 0x0100;
     47
     48	set_bit(EV_KEY, pmu_input_dev->evbit);
     49	set_bit(EV_SW, pmu_input_dev->evbit);
     50	set_bit(KEY_POWER, pmu_input_dev->keybit);
     51	set_bit(SW_LID, pmu_input_dev->swbit);
     52
     53	err = input_register_device(pmu_input_dev);
     54	if (err)
     55		input_free_device(pmu_input_dev);
     56	return err;
     57}
     58
     59void via_pmu_event(int key, int down)
     60{
     61
     62	if (unlikely(!pmu_input_dev))
     63		return;
     64
     65	switch (key) {
     66	case PMU_EVT_POWER:
     67		input_report_key(pmu_input_dev, KEY_POWER, down);
     68		break;
     69	case PMU_EVT_LID:
     70		input_report_switch(pmu_input_dev, SW_LID, down);
     71		break;
     72	default:
     73		/* no such key handled */
     74		return;
     75	}
     76
     77	input_sync(pmu_input_dev);
     78}
     79
     80late_initcall(via_pmu_event_init);